{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54858",
    "entityType": "User",
    "nonce": "0xa6513b6065de48025906f6cc082e46271d7f5ce7fcfd68256bb1788b333aaf4a",
    "signature": "0x68181eecbf6bd8482ed12e8c6c5ea76161a55be18432ffe007ec6153d71300f83bd8e67f08f41611cbf2f0192458a85c96caeddae9f7c31c4da085e80940b3001c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}